Centering and guiding device for deep-boring apparatus with eccentric boring-tool.



No. 7l2.887 v Patented Nov.-4, I902. v

, J. WYCZYNSKI.

CENTERING AND GUIDING D EVICE FDR DEEP BORING APPARATUS WITH ECCENTBICBORING TOOL.

(Application filed May 9, 1900.)

um Model.)

2 Sheets-Sheet I.

N0. 7l2,887. Patented Nov. '4, I902.

J. WYCZYNSKI. CENTERING AND GUIDING DEVICE FOR DEEP BORING APPARATUSWITH ECCENTRIC BORING TOOL.

(Application filed May 9, 1900.)

zsheetwsheet 2.

(.No Model.)

. JQ A a UNITED. STATES- PATENT OFFICE.

JOSEF WYCZYNSKI, OF TRUSKARVIEO, NEAR DROIIOBYCZ, AUSTRIA- HUNGARY.

CENTERING AND GUIDING DEVICE FOR DEEP-BORING APPARATUS WITH ECCENTRICBORING-TOOL.

SPECIFICATION forming part of Letters Patent No. 712,887, dated November4, 1902.

Application filed May 9, 1900 Serial No. 16,080. (No model.)

To all whont it may concern:

Be it known that I, JosEr WYczvNsKI, a

subject of the Emperor of Austria-Hungary,

residing at Truskarviec, near Drohobycz, in the Province of Galicia, inthe Empire of Austria-Hungary, have invented certain new and usefulImprovements in Centering and Guiding Devices for Deep-Boring Apparatuswith Eccentric Boring-Tool; and I do hereby declare the following to bea full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, ref-- orencebeing had to the accompanying drawing device or devices with the tooland the rod or rods connected therewith, and the provision of means formoving the movable gripping-jaws of the centering devicessimultaneously, or substantially so, into engagement with the bore tubeor casing.

That my invention may be fully understood, I will describe the same indetail, reference being had to the accompanying drawings, in which-Figure 1 is a fragmentary vertical sectional view of so much of a boringapparatus as will be necessary to an understanding of my invention. Fig.1 shows a side elevation of a bore-tube, showing the boring mechanism indotted lines, and a vertical sectional view of a cylinder forcompressing a fluid through the medium of which the movable jaw of thecentering device or devices is moved into engagement with the bore tubeor casing. Fig. 2 is a fragmentary sectional view on line A A of Fig. 3,which latter is a section on line BB of said Fig. 2; and Fig. 4 is apart plan and part section on line B B of Fig. 2, showing the movablejaw of acentering device rctracted.

Referring to Figs. 1, 2, 3, and 4, 25 indicates the bore tube or casing,hereinafter referred to as the .bore-tube, which has its inner peripheryserrated 0r corrugated circumferentially, as shown at 15, and dindicates the toolcarrier or lower section of the bore-rod carrying theboring-tool b. As shown in Fig. fl, one half of the effective or boringedge of the tool I) is of greater and the other half of less radius thanthe internal radius of the boretube,- so that the diameter of the borewill be slightly greater than the external diainetorof said tube,whereby the feeding down of the integral therewith, as shown, a sectoralgripping-jaw g of the same radius as the internai radius of thebore-tube and whose outer or gripping face is serrated or corrugated toengage or mesh withthe circumferential serrations or corrugations t onthe inner periphery of the bore-tube t. 'Diametrically opposite therigid jaw g the bearing a has formed thereon a sect-oral chamberedmember g 0 less radius than the internal radius of the bore-tube, in thechamber e of which is fitted to slide fluid-tight, or substantially so,a sectoral gripping-jaw f, whose outer face is likewise provided withserrations or corrugations adapted to engage or mesh with the serrationsor corrugations t in bore-tube t. g

The chambers e in the members g of the guide and centering devices 0 areconnected together by pipes h, the chamber of the uppermost centeringdevice being connected by a pipe h with any suitable fluid-compressor ordevice for supplyinga fluid under pressure to said chambers. In Fig.1,'Ihave shown a cylinder m open at its upper end, in which works a pistonq, carried by a screw-spindle o,

. tool and at the same time guiding the said' bore-rod in its rotary andvertical movements. Should it be desirable or necessary to hoist thebore-rod and centering devices out of the bore-tube t, the pressure onthe jaws f can be relieved by simply-screwing the piston q in cylinder min a reverse direction, as will be readilyunderstood, and said jaws willbe automatically retracted by the springs t.

Of course anyother means may be employed for moving the jaws j intoengagement with the bore-tubet by the pressure of a fluid and forrelieving the pressure on said jaws.

With a view to aifording means for the ready removal of thediluting-water and the solid spoils through the bore-tube the jaws g ofthe centering devices have vertical pas sages formed therein, similarpassages being formed along the bearing (1 by bracing or strengtheningwebs, which connect the rigid jaw g to the sectoral member g.

In order that the bore-rod and tool, together with the centeringdevices, may be hoisted out of the bore-tube 25, itis necessary that thehalf of said tool which is of greater. radius than the internal radiusof the bore-tube be in line with the radius of the rigid jaw g, so

that when the movable jaws are retract-ed the bore-rod and centeringdevices may have room to move or swing laterally in the boretube, andthereby move the pointof the aforesaid half of the edge of greaterradius than the inner radius of the bore-tube clear ofthe inner wall ofthe latter. With a view to avoid the necessity of rotating the bore-rodto bring the tool into the desired position by the means usuallyprovided for this purpose Ihave provided means whereby this isautomatically efiected whenever the bore-rod is raised sufficiently. Tothis end the lowermost centering device has secured to its un-. der sidea sleeve or tube 70, cut away bias longitudiualky or at an angle to itsaxis, with the point downward, through which tubetheborerod a passesfreely, and said rod is provided with a corresponding.projection Z,tapering upwardly and engaging one or the other inclined edge of thetube, whereby said rod is rotated and the tool always brought into therequired position. This done, the movable gripping-jaws are relieved ofpressure, and the bore-rod and guide and centering devices can behoisted out of the bore-tube, as will be readily understood.

"mass? Having thus described my invention, what I claim as new therein,and desire to secure by Letters Patent, is

1. In a well or shaft boring apparatus, the comhination'with the boretube or casing provided with an internal circumferential gripping-faceand the tool-rod; of a guide and centering device comprising aguide-bearing for said rod having formed thereon a sectoral rigidgripping-jaw of the same radius as the internal radius of thegripping-face of the bore-tube, and carrying a sectoral radiallyslidinggripping-jaw diametrically opposite said rigid jaw and means for movingthe sliding jaw into and out of engagement with the internalgripping-face of the bore-tube, for the purpose set forth.

2. In a well or shaft boring apparatus, the

combination with the bore tube or casing provided with an internalcircumferential gripping-face and the tool-rod; of a guide and centeringdevice comprising a guide-bearing for said rod having formed thereon asectoral rigid gripping-jaw of the same radius as the internal radius ofthe gripping-face of the bore-tube and carrying a sectoralradiallysliding gripping-jaw diametrically opposite said rigid jaw,means for projecting the sliding jaw into engagement with thegrippingface of the bore-tube and means operating antomatically to movesaid jaw out of engagement' with said tube, for the purpose set forth,

3. In a well or shaft boring apparatus, the combination with the boretube or casing provided withan internal peripheral gripping face and thetool-rod; of a guide and centerjaw of the same radius as the internalradius of the bore tube or casing and with a radiallymovable jaw workingin a pressure-chamber of said bearing, and means for supplyinga fluidunder pressure to said chamber to project said jaw intoengagement withthe afores'aid gripping-face of the bore tube or casing, for thepurposes set forth.

4. In a well or shaft boring apparatus, the combination with the boretube or casing provided with an internal peripheral grippingface, andithe tool-rod; of a guide and centering device comprising a bearing forthe toolrod, provided with a rigid segmental grippingjaw of the sameradius as the internal radius of the bore tube or casing and with a,radially.- movable jaw working in a pressure-chamber of said bearing,means for supplying a fluid under pressure to said chamber to projectsaid jaw into engagement with the aforesaid gripping-face of the boretube or casing and means operating automatically to retract the jaw whenrelieved of pressure, for the purposes set forth.

5. In a well or shaft boring apparatus, the combination with the boretube or casing provided internally with peripheral grippingfaces, andthe tool or here rod; of a plurality of guide and centering devices atdifferent elevations, each comprising a bearing for the tool or borerod, provided with a sectoral gripping-jaw of the same radius as theinternal bearing, and means for supplying pressure simultaneously orsubstantially soto the several chambers to project the sliding jaws intoengagement with the bore-tube, for the purposes set forth. I

6Q In a well or shaft boring apparatus, the combination with the boretube or casing provided internally with peripheral grippingfaces, andthe tool-rod; of a plurality of guide and centering devices atdi'iTerent'elevations, each comprising abearing for the tool-rod,provided with a'rigid sectoral gripping-j aw of'the same radius as theinternal radius of said bbre tube or casing and diametrically oppo-.

site with a radially-movable sectoral grippingv jaw working in apressure-chamber on said bearing, pipe connections between the severalehambers,,and a pipe from the upper chamber to the surfacefor supplyingfluid under pressure to the several chambers to project the movable jawsinto engagement with vided with internal circumferential corrugations orscrew-threads, and the tool-rod; of a guide and centering devicecomprising a correspondingly corrugated or threaded sectorshapedgripping-jaw of the same radius as the internal radius of said bore tubeor cas-' ing and provided with an axial bearing for the tool-rod, and asimilar gripping-jaw having slidingmotion in guides in said aXialhearing,

-means for moving the sliding jaw into ongagement with the gripping-faceof the boretube and means operating automatically to move said slidingjaw out of engagement with said gripping-face, for the purpose setforth.

8. Ina wellor shaft boring apparatus, the combination with the bore tubeor casing provided with internal circumferential grippingfaces, thetool-rod provided with a spiral rib 1,.

and lhe boring-tool having one half 01 its boring or cutting edge ofless, and the other half 'of greater radius than the internal radius ofsaid tube or casing; of a guide and centering device comprising asector-shaped gripping,- jaw of the same radius as the, internal radiusof the bore tube or casing and provided with an axial bearing for thetool-rod extended beyond said jaw and cut away on a bevel to engage theaforesaid rib l on said tool-rod, said parts so arranged that when thetool-rod is lifted one or the other-edge of the beveled portion of thebearing extension will engage the rib Z and revolve the tool-rod andposition the tool with its greater radius in line with the aforesaidgripping-jaw, a second gripping-jaw having radial motion toward and fromthebearingof the first-named jaw, means controllable from above groundto project the movable jaw into engagement with the gripping-face ofithebore tube or casing,and means for automatically retracting said jaw, forthe purposes set forth.

- In testimony that I claim the foregoing as

